Flight data posted online appears to show another Army helicopter flying higher than the maximum altitude allowed around Ronald Reagan Washington National Airport in Washington, D.C., before last week’s fatal collision between a Black Hawk helicopter and a passenger plane.

A military helicopter was flying above the maximum altitude for its route when it collided with a passenger plane near Washington D.C. last week, authorities said. The National Transportation Safety Board said in an update on Tuesday that it obtained data,

The Army pilots were juggling dark skies, low altitude, a busy airspace and a cockpit without certain traffic detectors before the helicopter’s midair crash with a regional passenger jet.